Multiple choice

A man is 6 times as old as his son now. In 6 years' time, their ages will be in the ratio of 7: 2. Find the present age of his son.

  1. 8 Year

  2. 5 Year

  3. 6 Year

  4. 10 Year

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Let the son's age be x. The man is 6x years old. In 6 years, ages are (6x+6) and (x+6), with ratio 7:2. Solving 2(6x+6) = 7(x+6) gives 12x+12 = 7x+42, so 5x = 30 and x = 6. The son is 6 years old.